Men cannot labor on always. They must have intervals of
relaxation. They cannot sleep through these intervals. What are
they to do? Why, if they do not work or sleep, they must have
recreation. And if they have not recreation from healthful
sources, they will be very likely to take it from the poisoned
fountains of intemperance. Or, if they have pleasures, which,
though innocent, are forbidden by the maxims of public morality,
their very pleasures are liable to become poisoned fountains.
- Orville Dewey

Recreation is intended to the mind as whetting is to the scythe,
to sharpen the edge of it, which otherwise would grow dull and
blunt,--as good no scythe as no edge.
- Joseph Hall

He that will make a good use of any part of his life must allow a
large portion of it to recreation.
- John Locke (1)